Topic: Grooving gearbox bearings?

[AshimotoK0]

Does anyone know the engineering procedure for grooving bearings like the Honda gearbox ones? I appreciate that these are C3 high speed bearings and you can get a standardd grooved type but the groove is too wide. Another option I have seen described on the site site is to make a special modified half ring retainer which is stepped.

I do  have access to full engineering facilities apart from centreless grinding.

I do appreciate you can get the special bearings from Honda  so that's another (expensive) option. Well I am a Yorkshireman after all!!!!!

BTW just read the MCM 'Engine Analysis' from '74 which says not a sign of roller bearings in the SOHC 750 engine. They must have forgotten about the two caged needle roller bearings in the primary drive assembly?

Cheers!!!

AshD

Cheers

Ash

[mick7504]

Can't you help with the grooving procedure but here are the bearing part #s that I've used previously.
The grooves are the correct width.
These were purchased from SKF Bearings and the numbers should be recognisable by other suppliers.
(I'm assuming these are for a 750)
Mick

[Markcb750]

The groove is a standard option on most ball bearing outer race.

http://www.nsk.com/products/ballbearing/deepgroove/pdf/NSK_CAT_E1102h_B4-B45.pdf

If you look in the NSK catalog you will find most bearing sizes have a smap ring groove option.

The location of the groove is fairly consistent across bearing manufactures so that they can be interchangeable. 

If Honda chose to make a special bearing to meet their designs requirements the size and location of the groove should be measured by some one with the correct instruments.  Most machinist have the tools and can turn the groove on any lathe with a ceramic insert tool.